Make sure to close when _BaseDataInputStream reaches the end

runtime/bin/file_impl.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class _FileInputStream extends _BaseDataInputStream implements InputStream {
   _FileInputStream(File file) {
     _file = file.openSync();
     _length = _file.lengthSync();
     _streamMarkedClosed = true;
     _checkScheduleCallbacks();
   }
 
   int available() {
-    return _length - _file.positionSync();
+    return _closed ? 0 : _length - _file.positionSync();
   }
 
   void pipe(OutputStream output, [bool close = true]) {
     _pipe(this, output, close: close);
   }
 
   List<int> _read(int bytesToRead) {
     List<int> result = new List<int>(bytesToRead);
     int bytesRead = _file.readListSync(result, 0, bytesToRead);
     if (bytesRead < bytesToRead) {
       List<int> buffer = new List<int>(bytesRead);
       buffer.copyFrom(result, 0, 0, bytesRead);
       result = buffer;
     }
     _checkScheduleCallbacks();
     return result;
   }
 
   int _readInto(List<int> buffer, int offset, int len) {
     int result = _file.readListSync(buffer, offset, len);
     _checkScheduleCallbacks();
     return result;
   }
 
-  void close() {
+  void _close() {
+    if (_closed) return;
     _file.closeSync();
-    _closeCallbackCalled = true;
+    _closed = true;
   }
 
   RandomAccessFile _file;
   int _length;
+  bool _closed = false;
 }
 
 
 class _FileOutputStream implements OutputStream {
   _FileOutputStream(File file) {
     _file = file.openSync(true);
   }
 
   bool write(List<int> buffer, [bool copyBuffer = false]) {
     return _write(buffer, 0, buffer.length);
@@ skipping 990 matching lines @@
   var _readByteHandler;
   var _readListHandler;
   var _noPendingWriteHandler;
   var _positionHandler;
   var _setPositionHandler;
   var _truncateHandler;
   var _lengthHandler;
   var _flushHandler;
   var _errorHandler;
 }